Hi. As above. When computer idle, say GPU temperature was 42degreeC, and fan speed was 11%. When I run 3D application, the fan speed goes to max 100% (based on GPU temperature 55degreeC setting, 100%). But, when GPU cooling down to temperature 42degreeC, the fan speed can not go back to 11%. Looks like going down only to 50% and stuck there. I am wait for about 1/2 hour, and still on 50%. Is it a bug? Regards, Arto.